User interface adjustment methods and systems

One or more systems and/or methods for adjusting a user interface based upon an orientation of an input object are provided. An input provided by an input object (e.g., a hand of the user) may be received through a display of a device (e.g., a touchscreen display of a smartphone). The input may comprises gesture data corresponding to a gesture performed relative to the display. The input may be evaluated to determine an orientation, such as a hand orientation, of the input object. In an example, curvature associated with the gesture may be evaluated to determine the orientation of the input object. A user interface displayed by the device may be adjusted based upon the orientation of the input object. In an example, a location, a size, an appearance, an output, and/or a functionality of a user interface element displayed within the user interface may be adjusted.